Resilient wheel



C. SMITH. V

RESILIENT WHEEL.

APPLICATION FILED sEPT.22, 1920.

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Patented Oct. M, 192ML To all 'whom #may ,concern thecity and county :of Philadelphia,

cLIrFoRD SMITH, orrHILADELrHIA, rENNsYLvANIA.

it i.

SMITH, a 1n ate 13e it known `that I, CLIFFORD citizen of the United States, residing t of Pfennsylvania, have invented a new usefiilResilientWheel, of which the follow.`

. ing isa specification. i

My invention consists of a resilient wheel .having the tread portion thereof composed of a plurality of concentric rims, zone `fitted i within the other, and interposed resilient members which provide resiliency for the wheel, and novel means for connecting said members whereby they are free to yield to proper extent but prevented from improper spreading.

It consists also of novel devices fo-r connecting said rims and permitting the outer rim to yield resiliently under the conditions of the load to which the wheel is subjected while running, while the inner rim is connected iirrnly with the felly of the wheel and serves to guide the outer rim on its yielding motions. y

The invention is satisfactorilyillustrated in the accompanying drawing, but the `important instrumentalities thereof may be val ried, and so it is to be understood that the invention is not limitedV to the specific de. tails shown and described, as longv as `they are within the spirit or scope of the claims. Figure 1 represents a partial side elevation and partial section of 'a portion of a resilient wheel embodying my invention.

Fig. 2 represents a section of a portionY on line 2-2 Fig. 1, on an enlarged scale.

Fig. 3 represents a section of a portion on line 3-3 Fig. 2.

Fig. 4L represents a section o-fa portion on linelw-; Fig. 1. l i

Similar numerals of reference indicate coresponding parts in the figures.

Referring to) thedrawings, y l `1 designates the felly of a wheel, and 2 designates a hollow rim of suitable metal of circular form, its sides?) or side walls being firmly connected with the sides of said felly by the bolts 4;, the outer circumference of said rim being open.

\ 5 designates a hollow rim of suitable metal whose sides 6 are fitted freely within the sides 3 ofthe inner rim, through the open circumference of the latter.

wall 7 which` comprises the tread portion and Said rim 5 isv open on its inner circumference and has its outer circumference closed by the peripheral Specification oiLetters Patent. i i llPgmgQmLf-,Qdl @43h11, 11921, "Appncatipn inea september 22,11920. ser'ialNo. 411,971. i

proper-of thewheel and has therein around' the same the shoe 8 of rubber or other elastic materia-lon which the wheel isadapted tol `Over the outer periphery of the felly 1 islV the ring 9 of metal or other suitable material, the same Y embracing firmly said felly andlextendingfrom the sides 3 of the inner of the outer rim. The crownsv 14 of said springs are seated on the ring 9 and formed with the slots 15 through. which pass the headedI bolts 16 whose Shanks are yconnected with said ring as a connection with the felly by which provision said springs are retained in position and are adapted to yield when the wheel is running, thus providing the resiliency for the wheel.

In order to prevent the limbs 11 from improper spreading while permitting them to yield toward each other they are formed with slots 17 through which are passed freely the shanks of bolts 18 whose ends are provided respectively with heads and nuts, beveled washers 19 being interposed between said headsand nuts and the adjacent portionsof the limbs for evident purposes. On the exterior faces of the sides 6 of the inner rim 5 are the outturned caps or collars in the caps 21, in and out movements as well as in the circular movement of the rim 5,

while the wheel isin use said rim 5 yielding radially and circularly to the load thereon subject to the resiliency occasioned by the springs 10.

The outer walls of the collars 2O are in contact freely withthe inner walls of the collars 21 so that the former walls ride on the latter walls and so steady the outer rim 5 in its in and out movements on the inner rim 2.

In order to lubricate the sides-of the rim 5, there are connected with the terminal portions of the sides 3 of the rim 2 `the oil or grease cups 22 Whose outlets lead to the joints 23 of the sides of the rims, as shown most plainly in Fig. 2.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

l. In a resilient Wheel, members on the circumference thereof, consisting of inner and outer channel-shaped rims, the outer rim being placed laterally Within the inner rim and being movable relatively thereto radially and circumferentially7 resilient means interposed between the peripheral Wall of the outer rim and the inner rim of the Wheel, said resilient means consisting of a spring substantially U-sliaped, its limbs being secured to said peripheral Wall and its crown being secured to said inner rim, and a bolt-like member adapted to pass freely through slots in said limbs and having its opposite members engaging the outer faces of the latter to prevent spreading thereof.

2. A resilient Wheel embodying oppositelydisposed channel-shaped rims one slidable Within the other, the one formed on its lateral face with outturned circular caps at intervals of relatively large diameter and the other with outturned smaller circular caps at intervals loosely received within the firstnamed caps, whereby the rims are guided in their radial movements, and resilient means secured to the opposed surfaces of said channel rims, the caps of the outer rim being adapted to ride on the inner caps to control the outer rim in its movements.

CLIFFORD SMITH.

Iitnesses JOHN A. IVIEDERSHEIM, N. UssINGER. 

